Re: Cache DNS

[Stephane Bortzmeyer <stephane@sources.org>]

On Sat, Feb 12, 2011 at 02:25:15PM +0100,
 Luxpopuli Open source <luxpopuli07@gmail.com> wrote 
 a message of 179 lines which said:

> # dig +trace luxpopuli.fr @212.27.40.240
...
> Qu'est-ce que je dois en conclure ? 

Que vous n'utilisez pas dig +trace correctement. Il part toujours des
serveurs de la racine et il ne faut donc pas lui indiquer l'adresse
d'un serveur.

% dig +trace luxpopuli.fr

; <<>> DiG 9.6-ESV-R3 <<>> +trace luxpopuli.fr
;; global options: +cmd
.			475249	IN	NS	i.root-servers.net.
.			475249	IN	NS	a.root-servers.net.
.			475249	IN	NS	h.root-servers.net.
.			475249	IN	NS	g.root-servers.net.
.			475249	IN	NS	f.root-servers.net.
.			475249	IN	NS	c.root-servers.net.
.			475249	IN	NS	b.root-servers.net.
.			475249	IN	NS	l.root-servers.net.
.			475249	IN	NS	e.root-servers.net.
.			475249	IN	NS	m.root-servers.net.
.			475249	IN	NS	j.root-servers.net.
.			475249	IN	NS	d.root-servers.net.
.			475249	IN	NS	k.root-servers.net.
;; Received 447 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms

fr.			172800	IN	NS	g.ext.nic.fr.
fr.			172800	IN	NS	f.ext.nic.fr.
fr.			172800	IN	NS	e.ext.nic.fr.
fr.			172800	IN	NS	c.nic.fr.
fr.			172800	IN	NS	a.nic.fr.
fr.			172800	IN	NS	d.nic.fr.
fr.			172800	IN	NS	d.ext.nic.fr.
;; Received 469 bytes from 192.33.4.12#53(c.root-servers.net) in 46 ms

luxpopuli.fr.		172800	IN	NS	ns1.o2switch.net.
luxpopuli.fr.		172800	IN	NS	ns2.o2switch.net.
;; Received 89 bytes from 2001:500:2e::2#53(d.ext.nic.fr) in 41 ms

luxpopuli.fr.		14400	IN	A	109.234.160.22
luxpopuli.fr.		86400	IN	NS	ns1.o2switch.net.
luxpopuli.fr.		86400	IN	NS	ns2.o2switch.net.
;; Received 137 bytes from 109.234.160.5#53(ns1.o2switch.net) in 36 ms